Frankjr111
Member
I have an elevator system that currently has a 750 va 120 v UPS installed on it. We are noticing that about every 8 months the UPS's bateries die. I realize that excerising the batteries are the right thing to do but apart from that what specific UPS criteria should I being looking for and do they come with a feature to automatically switch back to shore power if the batteries or the UPS fails. BTW a dot matrix printer is also plugged into the UPS...I know this is not the best senerio but nevertheless.....thoughts?